Sol_140R2025Q0066.pdf

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08/29/2025 1500 PD

08/07/2025

9169786188Sherry Heibeck (No collect calls)

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140R2025Q0066

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Sacramento CA 95814-2536 801 I Street, Suite 140 Bay Delta Area Office Bureau of Reclamation

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Sacramento CA 95825-1898 2800 Cottage Way, Room E-1815 Division of Acquisition Services Regional Office Mid-Pacific Region

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57 2 of

COMBINED SYNOPSIS/SOLICITATION

140R2025Q0066

Continuous Flow and Water Quality Monitoring Network in the Sacramento-San Joaquin Delta and Suisun Bay

Contracting Office:

Bureau of Reclamation Interior Region 10 · California-Great Basin

Acquisitions and Services Division Supply and Services Branch

Sacramento CA 95825

This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in Subpart 12.6, as supplemented with FAR parts 13.5 and additional information included in this notice.

The Bureau of Reclamation intends to award a hybrid Time & Material and Firm Fixed Price Purchase Order for services represented in the Performance Work Statement. This announcement constitutes the only solicitation; quotes are being requested, and a written solicitation will not be issued. The solicitation document and incorporated provisions and clauses are those in effect through Federal Acquisition Circular 2025-05, as of August 7, 2025.

This requirement is being solicited as a Women Owned Small Business Set-aside (WOSB) and will be awarded on a Best Value basis in accordance with Part FAR 13.5.

GENERAL INFORMATION

RFQ Number: 140R2025Q0066

Request for Quotation

(RFQ)

Request for Proposal

(RFP)

Invitation for Bid

(IFB)

Size Standard: $19 million North American Industry Classification Code (NAICS): 541690

Quotes are due no later than 3:00pm PDT on August 29, 2025

Quotes shall be emailed to Sherry Heibeck at sheibeck@usbr.gov. Receipt of all quotes will be acknowledged. If you do not receive and acknowledgement, you should assume that your quote has not been received, and you should contact the Contract Specialist listed above.

Offerors must be registered in System for Award Management (www.SAM.gov) by the closing date of the solicitation in order to be considered for award. SAM is an official website of the U.S Government and there is no cost to register in SAM.

Business Name: ______________________________________________________________________

Business Address: ____________________________________________________________________

Agency Point of Contact: _______________________________________________________________

POC Phone No. & Email: ______________________________________________________________

SAM UEID/Cage Code: _______________________________________________________________

Business Size (select one): __Women Owned Small Business (WOSB) mailto:sheibeck@usbr.gov http://www.sam.gov/

SECTION B – CONTINUATION OF SF-1449

PRICE SCHEDULE

1. Refer to Attachment 1, Price Schedule

2. Vendor shall provide fully burdened labor rates for labor categories

3. Vendor shall provide Firm-Fixed Price for Equipment, Software, Travel, Materials, and Other Items

4. The quantities in the price schedule will be used for price evaluation purposes only

IMPORTANT INFORMATION

BE SURE TO READ FAR 52.212-1, INSTRUCTIONS TO OFFERORS, AND FAR 52.212-2,

EVALUATION FACTORS. IF GUIDELINES ARE NOT FOLLOWED AS SET FORTH IN

52.212-1 YOUR OFFER COULD BE CONSIDERED NON-RESPONSIVE.

PERFORMANCE WORK STATEMENT

Continuous Flow and Water Quality Monitoring Network in the Sacramento-San Joaquin Delta and Suisun Bay

July 30, 2025

1.0 Background

Reclamation operates and maintains the Central Valley Project (CVP) for the purposes of navigation and flood control; fish and wildlife mitigation, protection, restoration, and enhancement; agricultural and municipal and industrial water supply; power generation; and recreation. Reclamation’s mission is to perform these functions in an environmentally and economically responsible manner. To carry out this mission, Reclamation requires accurate and reliable data and information on the hydrodynamic, water quality and biogeochemical properties of the Sacramento-San Joaquin Delta (Delta) and Suisun Bay. Observational environmental data are used for: (i) real-time operation of CVP facilities, (ii) documenting long term status and trend measures of Delta ecosystem responses to hydrologic conditions, CVP operations and habitat restoration actions, and (iii) calibrating and validating hydrodynamic, sediment transport, biogeochemical, and ecological models.

The proposed tasks include high-frequency monitoring for flow, water quality (including chlorophyll, nutrients, and phytoplankton species composition), sediment, as well as biological responses at key locations in the Delta.

The physical properties monitored by the fixed-station network are the primary drivers of the habitat conditions and biological responses that management actions are designed for. For example, nutrient and phytoplankton dynamics are explicitly measured at select stations to improve our understanding of how physical dynamics, water quality, and landscape features shape the base of Delta food webs. These data will provide information about drivers linked to food quantity and quality as well as potential toxin production by harmful algae. Suspended-sediment monitoring provides an understanding of the sediment inputs and internal exchanges between Delta regions, locations of sources and sinks, and provides insight into the underlying cause of turbidity variability in the Delta. Suspended-sediment measurements also gage the availability of suspended sediment for existing tidal wetlands and for proposed large-scale marsh restoration efforts in the Delta.

Combined, these data establish the spatially and temporally rich data set needed for real-time operation of CVP facilities, understanding Delta ecosystem responses to hydrological conditions altered by the CVP, and evaluating restoration actions.

2.0 Purpose and Scope of Work

The scope of this project includes ecological monitoring and research in Sacramento-San Joaquin Delta to better document and understand the effect of CVP operations on hydrological, biogeochemical, sediment, and ecological characteristics of the system. Data collected will include:

• Hydrodynamic data: continuous water level, velocity, and flow (including both discharge and direction) that provides information about transport, mixing processes and water residence times. Hydrodynamic processes directly affect water supply, fish habitat, fish migration, and wetland inundation. The equipment used to collect hydrodynamic data include acoustic Doppler velocity meters and pressure sensors.

• Water-quality data: continuous temperature, specific conductance, and turbidity, all of which drive biological and ecosystem processes. YSI EXO2 multiparameter water quality sondes are used to collect these data. In addition to basic water quality parameters (temperature, specific conductance and turbidity), some stations measure continuous dissolved oxygen, pH, chlorophyll, dissolved organic carbon, and nutrients that impact aquatic biogeochemical processes (e.g. transformation rates, aquatic productivity, zooplankton growth) and are also in turn altered by many of these processes (e.g., photosynthesis, respiration, uptake). Together with hydrodynamic data, these parameters allow us to understand conditions that favor different phytoplankton species, which can determine the health of the food web, and whether conditions create suitable habitat for critical species. These data are collected by adding additional probes to the YSI EXO2 multiparameter sondes with the exception of the nitrate data which are collected using a SUNA V2. Discrete samples for nutrients are chlorophyll concentration also collected for sensor validation and to analyze additional parameters.

• Phytoplankton species composition data include: the collection of discrete samples analyzed for phytoplankton enumeration, in addition to deployment of in situ multiparameter fluorometers that measure phytoplankton species composition at critical locations across the network to evaluate phytoplankton community dynamics that can inform the science and management of both beneficial and harmful algal blooms. Time-series data are collected using a multi-channel fluorometer (bbe Fluoroprobe).

• Sediment data are critical to assess and quantify suspended sediment distribution across the region and availability to existing and planned marsh habitats. Sediment concentration data are needed to transform turbidity data (a measure of water clarity) into suspended sediment concentration, a transportable quantity that can be used to compute suspended sediment fluxes and can be used in numerical models (turbidity cannot be used for either of these purposes). Suspended-sediment concentration data are typically measured with a D96 sampler, but collection methods determined by field conditions.

For continuous monitoring stations, data are collected at high temporal resolution (every 15 minutes) across a network of stations in the Sacramento-San Joaquin Bay-Delta region. The recipient will provide various modes of data delivery including curated data summaries; interactive dashboards of flow, water quality, biogeochemical conditions and constituent fluxes; real-time posting of in situ field data and timely posting of discrete data to a public repository [e.g., Environmental Data Initiative (EDI), California Data Exchange Center (CDEC)]. These products provide information for evaluation and understanding of ecosystem responses to management actions in the Bay-Delta.

Additionally, the recipient will: obtain the required permitting for monitoring and research activities; provide the necessary equipment, materials, supplies, and staffing to complete all tasks; conduct biological sample collection and processing (e.g., identification, enumeration); conduct data quality control and assurance, management and open access publishing; and serve as lead or co-lead on data analysis and reporting of results. These activities will be completed in collaboration with Reclamation biologists and natural resource specialists.

3.0 Type of Contract: The Government anticipates award of a hybrid Time & Materials and Firm-Fixed Priced contract.

4.0 Period of Performance: The anticipated period of performance of the contract will be for one-year and one month, October 1, 2025, through October 31, 2026.

No Option years are included in this contract.

Due to the large number of sensors and data types within this contract, a one-month “ramp-up” period will be granted to allow for deployment of sensors, switching telemetry and power units, and other infrastructure and data transmission changes, except for station San Joaquin at Jersey Point. Since this station is required through D-1641, this station should have as minimal lapse in data as possible.

Additional requests and discussions of data continuity should be brought to the COR, e.g., a ramp-down period if the contract is not renewed.

5.0 Administrative Information

5.1 Recognized Holidays:

The Government-recognized holidays are as follows:

New Year’s Day Labor Day Martin Luther King Jr.’s Birthday Columbus Day President’s Day Veterans Day Memorial Day Thanksgiving Day Juneteenth National Independence Day Christmas Day Independence Day

5.2 Place of Performance:

The work to be performed under this contract shall be performed at the Recipient’s facility and other places appropriate for accomplishing tasks (e.g., meetings, field and laboratory work).

Access to private property may be necessary to complete this PWS. Reclamation will work with private landowners to facilitate access. Under no circumstances should the Recipient access private property without prior approval from the landowner. Additionally, under no circumstances shall the Recipient release the results of the field surveys except to the respective landowner without prior authorization by Reclamation.

All field surveys shall be conducted by qualified professionals. Specific qualifications for professionals conducting these surveys shall be developed in coordination with Reclamation and may include prior professional experience, professional registrations, professional licenses, and permits or certifications issued by the National Marine Fisheries Service (NMFS), the United States Fish and Wildlife Service (USFWS), and/or the California Department of Fish and Wildlife (CDFW).

5.3 Security:

The Recipient shall be responsible for safeguarding all government equipment, information and property provided for Recipient use.

The Recipient shall be responsible for obtaining any rights-of entry and/or permission from Reclamation, State or Local entities and/or private landowners regarding assess to any properties that may be subject to any field visits.

5.4 Contract Key Personnel:

Recipient shall name a project manager and identify other key personnel prior to the commencement of work.

5.5 Contract Travel:

Travel will be required between Sacramento and Sherwood Harbor, Rio Vista, Antioch, and Benecia.

The number of trips to each location will vary and travel will be calculated as Firm Fixed price within the contract.

6.0 Deliverables:

The Recipient shall develop an initial project, and deliverables schedule no later than one (1) month after contract award that includes monitoring activities and deliverables as described below and in Table C1.

• All deliverables (other than invoices) shall be delivered to the Contracting Officer’s Representative (COR) at Reclamation’s Bay-Delta Office on the specified due dates listed below.

• All electronic deliverables to be posted externally shall be compliant with Section 508 Amendment to the Rehabilitation Act of 1973 (https://section508.gov/content/learn/laws-and-policies).

• All electronic deliverables to be posted and all materials made available to the general public shall meet Reclamation’s Visual Identity Standards (https://www.usbr.gov/vip/IV-p-reports.html).

• All data shall be delivered in a format that is discoverable and useable by end users inside and outside the government, and consistent with Memorandum M-13-13 Open Data Policy – Managing Information as an Asset (https://project-open-data.cio.gov/policy-memo/).

• All draft electronic deliverables shall be developed and submitted using Microsoft (MS) Office programs as applicable (e.g., Word, Excel, PowerPoint, Project, etc.) and all spatial data will be submitted using Environmental Systems Research Institute (ESRI) ArcGIS (Geographic Information System).

• All data management, summaries, and statistical analyses will be developed and submitted using program R (https://www.r-project.org/) and/or Tableau (https://www.tableau.com/tableau-login-hub).

7.0 Government Furnished Property:

Government-Furnished Property will be provided for this contract. Government will furnish certain property, services, utilities, etc.

Title to all property acquired with funds provided under this agreement shall be vested in Reclamation and is subject to the condition that the property shall be used for authorized purposes of the project. Should the recipient wish to take unrestricted title to any property acquired or to change the use of the facilities or real property so acquired, such transactions shall be governed by Federal Property Management Regulations.

All procurements of property using agreement funds shall be approved in writing by Reclamation prior to the transaction being initiated. The recipient shall not make disposition of any property except as directed in writing by Reclamation. Detailed records should be kept about all sensors and equipment, including serial number of instruments, date purchased, station deployed at, power source, etc.

8.0 Objectives:

Reclamation requires accurate and reliable data and information on the hydrodynamic, water quality, and biogeochemical properties of the Sacramento-San Joaquin Delta (Delta) and Suisun Bay to enable the fulfillment of their mission in an environmentally and economically responsible manner. Specific objectives for this contract are to:

• Collect high-frequency, real time data for hydrodynamics, biogeochemistry, phytoplankton, and suspended sediment at established stations across the Sacramento-San Joaquin Delta.

• Collect discrete data for nitrate, nitrite, ammonium, phosphate, total dissolved nitrogen, chlorophyll a, phaeophytin, phytoplankton enumeration, and suspended sediment.

• Develop and maintain station-specific turbidity – suspended sediment rating curves for selected stations.

• Create data summaries of flow, water quality, and biogeochemical conditions, constituent fluxes, and highlight events of ecological and management interest in quarterly reports, Tableau dashboards, and as requested by Reclamation.

https://section508.gov/content/learn/laws-and-policies https://www.usbr.gov/vip/IV-p-reports.html https://project-open-data.cio.gov/policy-memo/ https://www.r-project.org/ https://www.tableau.com/tableau-login-hub

9.0 Tasks:

Field and laboratory work includes the collection and processing of abiotic (i.e., physical environmental conditions) and biological samples. Processing is specific to the type of sample and must meet national and/or state standards or protocols. The Recipient will provide for up to two boats, with boat operators and field staff.

The Recipient will provide all equipment and supplies required to measure physical characteristics and collect and process water and biological samples, including but not limited to ADCPs, multiparameter sondes, fluoroprobes, nets for collecting phytoplankton, preservatives, containers, and microscopes.

The Recipient shall perform the following tasks.

Task 1. Fixed Station Network Operation and Maintenance-Tidal flow and Water Quality -- Hydrodynamics

Task 1 continues and refines the long-term monitoring network in the Delta. The flow and water quality data supported through this task will be further integrated with data collected by other groups or agencies. The Recipient will collect continuous hydrodynamic and water quality data at the locations specified in Figure A1 and Table B1. Specific methodology is detailed in Appendix C.

• Hydrodynamic properties to be measured will include gage height, mean velocity, discharge, and tidally filtered discharge (Figure A1; see methods in Turnipseed and Sauer, 2010 and Levesque and Oberg, 2012). Several stations are noted as “vel” in Table B1 to indicate that only sensor velocity and gage height will be reported.

o Pending landowner permissions and final 408/USACE permits, stations may be installed at: Old River near Byron (OH4), Steamboat Slough near Walnut Grove (SSS), Sutter Slough at Courtland (SUT), Shag Slough at Liberty Island near Courtland (SGG), Toe Drain North at Mallard Road near Courtland (TOEn), San Joaquin River below Garwood Bridge at Stockton (SJG), Channel Marker 66/Sacramento Deep Water Ship Channel near Clarksburg (CM66). If permits, or landowner permission are unsuccessful, we may need to continue operations with our existing configurations, delay data collection activities, or consider eliminating some data collection.

• Water-quality properties to be measured will include the following: water temperature, specific conductance, and turbidity.

o 11455338 (CM51) and 11455136 (CM66) – both stations have expanded water quality data collection underway to include water temperature, specific conductance, turbidity, dissolved oxygen concentration, pH, chlorophyll fluorescence (see Figure A2).

Deliverables:

• Real-time 15-minute-inteval data and relevant metadata posted to a publicly available website, complete all data by September 30.

• Discrete data posted online to a publicly available website, complete by September 30.

Task 2. Fixed Station Network Operation and Maintenance-Biogeochemistry

The Recipient will collect continuous water quality and biogeochemical data at the locations specified in Table B1 and all locations identified in Figure A2 except as noted below. Specific methodology is detailed in Appendix C.

• Water-quality properties will be measured using YSI EXO multiparameter sondes and will include: water temperature, specific conductance, turbidity, pH, dissolved oxygen (DO), chlorophyll fluorescence (fCHL), and fluorescence of dissolved organic matter (fDOM).

Continuous nitrate data will be collected using a Seabird SUNA.

• Continuous data related to phytoplankton community composition will be collected using a multichannel fluorometer (e.g., bbe Fluoroprobe) at five stations [Old River at Bacon Island (OBI), Middle River at Middle River (MDM), San Joaquin River at Jersey Point (SJJ), Sacramento River at Toland Landing near Rio Vista (TOL), Suisun Bay at Van Sickle Island near Pittsburg (CONFL); Table B1 and Figure A2]. These measurements provide a means to assess the presence and development of harmful algal blooms (HABs) by providing direct measurements of cyanobacterial biomass as well as beneficial algal blooms such as diatoms.

• In addition to in situ measurements, discrete water samples will be collected every 4-8 weeks at each station to validate and calibrate the instruments, as well as to measure additional parameters.

Analyses will include nitrate, nitrite, ammonium, phosphate, total dissolved nitrogen, chlorophyll a, phaeophytin, and phytoplankton enumeration (methods examples in USGS, 2023 and Bouma- Gregson et al., 2023). Discrete water quality validation data and phytoplankton enumeration data will be published online on a publicly available site:

(https://www.sciencebase.gov/catalog/item/6254b009d34e21f8276f4339).

Deliverables:

• Real-time 15-minute-inteval data and relevant metadata posted to a publicly available website, complete all data by September 30.

• Discrete data posted online to a publicly available website, complete by September 30.

• Up-to-date Tableau data visualization tools, as needed (within 30 days of request by COR) and completed by September 30.

Task 3. Fixed Station Network Operation and Maintenance-Delta Suspended Sediment

At a subset of continuous flow and water quality stations specified in Table B1 and Figure A3, the Recipient will collect concurrent measurements of turbidity and cross-section representative suspended sediment concentration (methods example in Morgan-King et al.) and maintain station-specific turbidity – suspended sediment rating curves. These rating curves will be presented in Model Archive Summary reports for each station using standard protocols and methods developed by the US Geological Survey (example: Haught, 2023; USGS ScienceBase data). Specific methodology is detailed in Appendix C.

complete all data by September 30.

• Discrete data posted online to a publicly available website, complete by September 30.

• List of Sediment Model Archive Summary (MAS) publication links and summary of model updates for all stations provided by September 30.

Task 4. Fixed Station Network Operation and Maintenance-Bay Suspended Sediment

At two monitoring stations, Mallard Island and Benicia, (the upstream and downstream ends of Suisun Bay, respectively) specified in Table B1 and Figure A3, the Recipient will collect concurrent measurements of turbidity and suspended sediment concentration (methods example in Morgan-King et al. link above) to develop station-specific turbidity–suspended sediment rating curves. These rating curves will be presented in Model Archive Summary reports for each station using standard protocols and methods developed by the US Geological Survey (example: Haught, 2023; USGS ScienceBase data). Specific methodology is detailed in Appendix C.

https://www.sciencebase.gov/catalog/item/6254b009d34e21f8276f4339 complete all data by September 30.

• Discrete data posted online to a publicly available website, all data online by September 30.

• List of Sediment Model Archive Summary (MAS) publication links and summary of model updates for all stations provided by September 30.

Task 5. Project Management and Reporting

The Recipient will manage this project by providing project oversight and coordination with Reclamation, progress reporting, budget tracking, scheduling, report writing, report review and edits, annual presentations, and review of deliverables for quality. Project management includes preparation and completion of deliverables and planning and coordination of project activities. The project manager will prepare the agenda and chair quarterly coordination meetings with Reclamation and other agency staff.

Within three months of the Period of Performance start date, the Recipient will enter this project’s initial information for each monitoring task into the Delta Science Tracker with input from the Reclamation technical representative. The Recipient will enter pertinent updates annually. The Delta Science Tracker is an online platform to inventory and summarize science activities in the Delta with the intent of improving communication among the Delta science community, promoting opportunities for collaboration, and tracking funding opportunities and expenditures. The Tracker serves as a mechanism for sharing information about scientific activities, highlights opportunities for collaboration, and provides access to related publications and outputs.

• Quarterly Coordination Meetings, Progress Reports, and Financial Reports [provided by October 30 (coordination meeting only, no reports due); January 31; April 30; and July 31]

• Quarterly curated data summaries of flow, water quality, and biogeochemical conditions, constituent fluxes, and highlighting events of ecological and management interest (provided by January 31; April 30; and July 31)

• Annual meta data reports for each station (meta data reports include information such as data availability statements, QA/QC reports, summary statistics, etc.) provided by September 30.

• Updated Delta Science Tracker entries (by September 30).

Task 6. Tableau databases and visualizations

To support Reclamation’s use and analysis of these datasets, the Recipient will coordinate with Reclamation staff to find a means to access combined Tableau datasets (including monitoring data collected under Tasks 1-4 as it becomes publicly available) so that collaborative visualizations may be developed with Reclamation. The Recipient will meet and collaborate with the Reclamation technical representative and other Reclamation staff to develop Tableau visualizations that address Reclamation management and science interests, including, but not limited to, understanding food web dynamics, sediment movement, and responses to management actions.

• Work with Reclamation to develop access to Tableau database resources and maintain access or updates for Reclamation Tableau users.

• Support, as needed, Tableau-focused database updates, training, work time, and discussions on cooperative projects.

See Appendix C for detailed methodology for Tasks 1-4.

10.0 Performance Assessment

The Quality Assurance Surveillance Plan is one evaluation method the government uses to surveillance to determine whether the Recipient meets the standards of performance as defined in the Performance Work Statement.

QUALITY ASSURANCE SURVEILLANCE PLAN (QASP)/

PERFORMANCE REQUIREMENTS SUMMARY (PRS)

Performance Requirements Summary

Performance Standard/ Acceptable Quality Level* Method of Surveillance

SOPs and Data Collection Written protocols for fieldwork, laboratory work, and data QA/QC and management

Vessels are maintained for safe and effective use; equipment is maintained and calibrated to meet standards; samples are collected and preserved properly; data are recorded electronically and QA/QCd;

organisms are identified, enumerated, and measured per agreed upon protocols and taxonomic lists

No more than 5% of samples missing or not processed. No more than 5% of organisms misidentified or not identified to the specified taxonomic resolution [but see potential on-ramp period text in section 4]. All phytoplankton and sediment samples processed with one year of collection.

Send via email to Reclamation COR and project PIs as soon as possible; provide any updated SOPs within one month of finalized revisions.

Monitor regular data updates, discuss study plans and issues at regular meetings

Documents and Data Reporting Address all relevant components that are included within Task descriptions.

Includes up to date information that is the best available current science.

Meet requirements of applicable laws, statutes, regulations, standards, and principles and guidelines.

Review of the materials submitted

Schedule and participate in meetings

Meetings, as needed, are scheduled, attended and facilitated

Adequate technical material and facilitation is provided to support the intended purpose of each meeting

Observation at meetings

Observation at meetings, input from attendees

Maintain Tableau data servers, assist Reclamation with analyses, graphics, and interpretation of data using

Reclamation access to current data from monitoring, updated Tableau dashboards within 30 days of request

Review data, metadata, R scripts, and Tableau dashboards

R-based functions, statistical tests, data figure generation can

Performance Requirements Summary

Performance Standard/ Acceptable Quality Level* Method of Surveillance

Tableau and other programs (e.g., R)

Provide annotated R scripts used in data management and analysis be re-run demonstrating the reproduction of monitoring results

*Note - Timeliness is required for all tasks within their required timeframes 100% of the time

Appendix A. Station Maps

Figure A1. Flow stations included in Task 1: Hydrodynamics. Stations either measure flow and velocity (vel; pink points) or only velocity (teal points). Station abbreviations can be found in Appendix B, Table B1.

Figure A2. Water quality stations included in Tasks 1-3. Stations measure temperature (temp), specific conductivity (SpC), and turbidity (turb; purple points); all water quality (WQ) consituents (temperature, specific conductivity, turbidity, pH, dissolved oxygen, chlorophyll a, and fluorescent dissolved organic matter; pink points); all water quality and nutrients (Nutr;

SUNA nitrate measurements and nutrient sample collection; green points); or all water quality consituents, nutrients, and fluoroprobe measurements (teal points). Station abbreviations can be found in Appendix B, Table B1.

Figure A3. Sedmiment measurement and discrete sample collection stations for Tasks 3-4 in the Bay (pink points) and the Delta (teal points). Station abbreviations can be found in Appendix B, Table B1.

Appendix B. Station locations and description

Table B1. Details of monitoring stations included in this contract. Information includes the full station name, the station abbreviation (Abbr.), the coordinates [Latitude (Lat) and Longitude (Lon), and the data types for hydrology [flow and velocity (vel)], water quality (WQ), and sediment (Sed.). For water quality data, categories indicate whether stations measure temperature (temp), specific conductivity (SpC), and turbidity (turb); all water quality consituents (temperature, specific conductivity, turbidity, pH, dissolved oxygen, chlorophyll a, and fluorescent dissolved organic matter); all water quality and nutrients (Nutr; SUNA nitrate measurements and nutrient sample collection); or all water quality consituents, nutrients, and fluoroprobe measurements. Italicized stations are no longer active, see CM49A in liu of LIB.

Station Name Station Abbr.

Lat Lon Flow data type

WQ data type

Sed.

data type

OLD R A FRANKS TRACT NR

TERMINOUS CA

OSJ 38.07111 -121.579 Flow + vel Delta

SAN JOAQUIN R A

PRISONERS PT NR

TERMINOUS CA

PRI 38.05944 -121.557 Flow + vel Delta

DELTA CROSS CHANNEL NR

WALNUT GROVE

DLC 38.24472 -121.505 Flow + vel All WQ

S MOKELUMNE R A NEW

HOPE BR NR WALNUT

GROVE CA

SMR 38.22556 -121.491 Flow + vel Temp + SpC + Turb

Delta

N MOKELUMNE NR WALNUT

GROVE CA

NMR 38.22333 -121.507 Flow + vel Temp + SpC + Turb

Delta

LITTLE POTATO SLOUGH A

TERMINOUS CA

LPS 38.09639 -121.496 Flow + vel All WQ + Nutr

MOKELUMNE R A ANDRUS

ISLAND NR TERMINOUS CA

MOK 38.10611 -121.571 Flow + vel Delta

THREEMILE SLOUGH NR RIO

VISTA CA

TSL 38.10333 -121.686 Delta

SAN JOAQUIN R BL

GARWOOD BRIDGE A

STOCKTON CA

SJG 37.93556 -121.329 Flow + vel Temp + SpC + Turb

Delta

SAN JOAQUIN R A JERSEY

POINT CA

SJJ 38.05222 -121.688 All WQ + Nutr + Flouroprobe

Delta

SUTTER SLOUGH A

COURTLAND CA

SUT 38.32917 -121.579 Flow + vel

STEAMBOAT SLOUGH NR

WALNUT GROVE CA

SSS 38.28472 -121.587 Flow + vel

SACRAMENTO R AB DELTA

CROSS CHANNEL CA

SDC 38.25778 -121.517 All WQ +

GEORGIANA SLOUGH NR

SACRAMENTO R

GSS 38.23722 -121.518 Flow + vel Temp + SpC + Turb

Delta

SACRAMENTO R BL

GEORGIANA SLOUGH CA

GES 38.23889 -121.522 Temp + SpC + Turb

SACRAMENTO R DEEP

WATER SHIP CHANNEL NR

FREEPORT

CM 72 38.47687 -121.584 Flow + vel Temp + SpC

Lat Lon Flow data type

WQ data type

Sed.

data type

SACRAMENTO R DEEP

WATER SHIP CHANNEL NR

CLARKSBURG

CM 66 38.40444 -121.615 Vel All WQ

TURNER CUT NR HOLT CA TRN 37.9925 -121.454 Flow + vel Delta

TOE DRAIN A MALLARD RD

NR COURTLAND CA

ToeN / ToeS

38.36514 -121.638 Flow + vel All WQ + Nutr

Delta

SACRAMENTO R DEEP

WATER SHIP CHANNEL NR

COURTLAND

CM 62 38.34167 -121.644 Vel All WQ +

SHAG SLOUGH A LIBERTY

ISLAND NR COURTLAND CA

SGG 38.31833 -121.693 Flow + vel All WQ + Nutr

Delta

VICTORIA CANAL NR BYRON

CA

VCU 37.87083 -121.53 Flow + vel Delta

YOLO BYPASS NR

WOODLAND CA

YOLO 38.67778 -121.643 Delta in lieu of LIB -- at point entering Cache Slough Complex

CM

49A

38.23333 -121.675 Flow + vel All WQ + Nutr

Delta

MIDDLE R AT MIDDLE RIVER

CA

MDM 37.94278 -121.533 All WQ + Nutr + Flouroprobe

CACHE SLOUGH A S LIBERTY

ISLAND NR RIO VISTA CA

LIB 38.24222 -121.686 Flow + vel All WQ + Nutr

Delta

SACRAMENTO R DEEP

WATER SHIP CHANNEL

MARKER 51 CA (CM51)

CM 51 38.23739 -121.674 Flow + vel All WQ Delta

MIDDLE R NR HOLT CA HLT 38.00306 -121.511 Flow + vel Delta

CACHE SLOUGH AB RYER

ISLAND FERRY NR RIO VISTA

CA

RYF 38.19396 -121.658 Flow + vel All WQ + Nutr

Delta

OLD R NR DELTA MENDOTA

CANAL CA

ODM 37.81056 -121.541 Delta

GRANT LINE CN NR TRACY

CA

GLC 37.82 -121.545 Delta

OLD RIVER NEAR BYRON CA OH4 37.89111 -121.569 Temp + SpC + Turb

Delta

SACRAMENTO R A RIO VISTA

CA

SRV 38.14904 -121.689 Delta

SACRAMENTO R BL TOLAND

LANDING NR RIO VISTA CA

(CM13)

TOL 38.07781 -121.767 Vel All WQ +

OLD R A BACON ISLAND CA OBI 37.97 -121.571 All WQ +

SUISUN BAY A VAN SICKLE

ISLAND NR PITTSBURG CA

CONFL 38.04953 -121.888 All WQ +

Lat Lon Flow data type

WQ data type

Sed.

data type

HOLLAND CUT NR BETHEL

ISLAND CA

HOL 38.01639 -121.582 Flow + vel Delta

SUISUN BAY A BENICIA

BRIDGE NR BENICIA CA

BEN 38.045 -122.126 Temp + SpC + Turb

Bay

DUTCH SLOUGH BL JERSEY

ISLAND RD A JERSEY ISLAND

DSJ 38.01361 -121.667 Temp + SpC

OLD R A QUIMBY ISLAND NR

BETHEL ISLAND CA

ORQ 38.02722 -121.564 Flow + vel Delta

SUISUN BAY A MALLARD IS

CA

MLD 38.04278 -121.919 Temp + SpC + Turb

Bay

SUISUN BAY A CHANNEL

MARKER 16 NR PORT

CHICAGO CA

M16 38.06553 -122.044

GRIZZLY BAY A SUISUN

SLOUGH NR AVON CA

GRIZ 38.10853 -122.056 All WQ +

FALSE R NR OAKLEY CA FAL 38.05583 -121.667 Flow + vel Delta

MINER SLOUGH NEAR

SACRAMENTO RIVER AND

PROSPECT ISLAND

MIR 38.23556 -121.666 Delta

Appendix C. Additional Information and Methodology

Table C1. Detailed descriptions of deliverables and deadlines for this agreement.

Deliverable Description Due Date

Time Series Data (Tasks 1-4) Real-time access, complete by September 30

Discrete Data (Tasks 1-4) Ongoing, complete by September 30

Quarterly Data Summaries January 31; April 30; and July 31

Quarterly Progress Reports, Coordination Meetings, Financial Reports

October 30 (coordination meeting only, no report due); January 31; April 30; and July 31

Final Data Report Completed and submitted by December 30 (3 months after conclusion of contract)

Meta Data Reports Complete by September 30

Delta Science Tracker entries Complete by September 30

Data management, summaries, visualizations, and statistical analyses developed using R and/or Tableau

Complete by September 30, as requested over the course of the agreement

Detailed Monitoring Protocols:

Task 1: Hydrodynamics Index-Velocity Method: River discharge is a function of the cross-sectional area and the cross-sectionally averaged velocity. However, because these parameters cannot be directly measured on a real-time basis, surrogate parameters that can be measured easily in the field are used and then calibrated to calculate the discharge. In tidally affected channels, stage and index velocity are measured directly in the field. Stage is calibrated to determine the cross-sectional area (A). Index velocity is calibrated to determine the cross-sectionally averaged velocity (V). These two values are then multiplied together to compute discharge (Q): Q=A*V. The USGS has documented detailed techniques and methods for field work, data processing, and computation which are referenced here:

• Techniques and Methods and other USGS policy related to using hydroacoustic instrumentation can be found at OSW Hydroacoustics Homepage: https://www.usgs.gov/hydroacoustics

• Levesque, V.A., and Oberg, K.A., 2012, Computing discharge using the index velocity method: U.S.

Geological Survey Techniques and Methods 3-A23, 148 p. Available online at:

http://pubs.usgs.gov/tm/3a23/

• Oberg, Kevin A.; Morlock, Scott E.; Caldwell, William Scott, 2005, Quality-assurance plan for discharge measurements using acoustic Doppler current profilers: U.S. Geological Survey SIR 2005-5183.

https://pubs.usgs.gov/sir/2005/5183/

• Kenney, T.A., 2010, Levels at gaging stations: U.S. Geological Survey Techniques and Methods 3-A19, 60p. Also available at: http://pubs.usgs.gov/tm/tm3A19

• Ruhl, C.A. and M.R. Simpson, 2005, Computation of Discharge in Tidally Affected Areas Using the Index Velocity Method, Scientific Investigations Report, 2005-5004, 41 p.

https://pubs.usgs.gov/sir/2005/5004/ https://www.usgs.gov/hydroacoustics http://pubs.usgs.gov/tm/3a23/ https://pubs.usgs.gov/sir/2005/5183/ http://pubs.usgs.gov/tm/tm3A19 https://pubs.usgs.gov/sir/2005/5004/

• Simpson, M.R., 2001, Discharge measurements using a broad-band acoustic Doppler current profiler:

U.S. Geological Survey Open-File Report 01-1, 123 p. https://pubs.usgs.gov/of/2001/ofr0101/text.pdf

• Simpson, M.R., and Oltmann, R.N., 1993, Discharge-measurement system using an acoustic Doppler current profiler with applications to large rivers and estuaries: U.S. Geological Survey Water-Supply Paper 2395, 32 p. https://pubs.usgs.gov/wsp/wsp2395/pdf/wsp_2395.pdf

Tasks 1 and 2: Water Quality and Biogeochemistry Continuous Water Quality: The USGS has well-documented procedures for field procedures, station operation and maintenance, and record computation for five common monitoring parameters: temperature, specific conductance, dissolved oxygen, pH, and turbidity. Guidelines for optical sensors for nitrate, chlorophyll, and dissolved organic matter were published in 2013, 2022 and 2023, respectively [Pellerin et al., 2013; Foster et al., 2022; Booth et al., 2023]. The current documentation for continuous water quality monitoring can be found here:

• Wagner, R.J., Boulger, W.R., and Smith, B.A., 2006, Revised Guidelines and standard procedures for continuous water-quality monitors: site selection, field operation, calibration, record computation, and reporting: U.S. Geological Survey Techniques and Methods, Book 9, Chapter B.

http://pubs.usgs.gov/tm/2006/tm1D3/

• Pellerin, B.A., Bergamaschi, B.A., Downing, B.D., Saraceno, J.F., Garrett, J.A., and Olsen, L.D., 2013, Optical techniques for the determination of nitrate in environmental waters: Guidelines for instrument selection, operation, deployment, maintenance, quality assurance, and data reporting: U.S. Geological Survey Techniques and Methods 1–D5, 37 p. https://pubs.er.usgs.gov/publication/tm1D5

• Downing, B.D., Bergamaschi, B.A., and Kraus, T.E.C., 2017, Synthesis of data from high-frequency nutrient and associated biogeochemical monitoring for the Sacramento–San Joaquin Delta, northern California: U.S. Geological Survey Scientific Investigations Report 2017–5066, 28 p., https://doi.org/10.3133/sir20175066.

• U.S. Geological Survey, variously dated, National field manual for the collection of water-quality data:

U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chaps. A1-A10, available online at https://www.usgs.gov/mission-areas/water-resources/science/national-field-manual-collection-water-quality-data-nfm [LM notes that sections A4-6 and 7.4-7.5 are particularly relevant]

• Foster, G.M., Graham, J.L., Bergamaschi, B.A., Carpenter, K.D., Downing, B.D., Pellerin, B.A., Rounds, S.A., and Saraceno, J.F., 2022, Field techniques for the determination of algal pigment fluorescence in environmental waters— Principles and guidelines for instrument and sensor selection, operation, quality assurance, and data reporting: U.S. Geological Survey Techniques and Methods 1-D10, 34 p. Accessed May 10, 2023, https://doi.org/10.3133/tm1D10.

• Booth, A., Fleck, J., Pellerin, B.A., Hansen, A., Etheridge, A., Foster, G.M., Graham, J.L., Bergamaschi, B.A., Carpenter, K.D., Downing, B.D., Rounds, S.A., and Saraceno, J., 2023, Field techniques for fluorescence measurements targeting dissolved organic matter, hydrocarbons, and wastewater in environmental waters: Principles and guidelines for instrument selection, operation and maintenance, quality assurance, and data reporting: U.S. Geological Survey Techniques and Methods 1-D11, 41 p.

Access May 10, 2023, https://doi.org/10.3133/tm1D11

• Example data and metadata recording: Water quality, nutrient, and phytoplankton data from Franks Tract, Mildred Island, and neighboring channels in the California Sacramento-San Joaquin Delta: 2022 and 2023 High-resolution mapping surveys - ScienceBase-Catalog

Tasks 3 and 4: Sediment sampling Sediment: The USGS has well-documented field and data management procedures for both continuous and discrete sample collection to ensure consistency and accuracy across all US Geological Survey sediment data collection efforts. Suspended-sediment samples are collected throughout the range of conditions to develop models relating continuous-turbidity values to suspended-sediment concentration.

https://pubs.usgs.gov/of/2001/ofr0101/text.pdf https://pubs.usgs.gov/wsp/wsp2395/pdf/wsp_2395.pdf http://pubs.usgs.gov/tm/2006/tm1D3/ https://pubs.er.usgs.gov/publication/tm1D5 https://doi.org/10.3133/sir20175066 https://www.usgs.gov/mission-areas/water-resources/science/national-field-manual-collection-water-quality-data-nfm https://www.usgs.gov/mission-areas/water-resources/science/national-field-manual-collection-water-quality-data-nfm https://doi.org/10.3133/tm1D10 https://doi.org/10.3133/tm1D11 https://www.sciencebase.gov/catalog/item/64ee7f82d34e4b6d8ab71438 https://www.sciencebase.gov/catalog/item/64ee7f82d34e4b6d8ab71438 https://www.sciencebase.gov/catalog/item/64ee7f82d34e4b6d8ab71438

• USGS Techniques and Methods as well as other national resources are available at the Fluvial Sediment and Geomorphology website: https://www.usgs.gov/mission-areas/water-resources/science/fluvial-sediment-and-geomorphology-resources-monitoring-and

• U.S. Geological Survey, variously dated, National field manual for the collection of water-quality data:

U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chaps. A1-A10, available online at http://pubs.water.usgs.gov/twri9A. [Sections A5 and 6.7]

• USGS Office of Surface Water Technical Memorandum 2016.07 and Office of Water Quality Technical Memorandum 2016.10. Policy and guidance for approval of surrogate regression models for computation of time series suspended-sediment concentrations and loads.

https://water.usgs.gov/admin/memo/SW/sw.2016.07%2Bwq.2016.10.pdf

• Rasmussen, P.P., Gray, J.R., Glysson, G.D., and Ziegler, A.C., 2009, Guidelines and procedures for computing time-series suspended-sediment concentrations and loads from in-stream turbidity-sensor and streamflow data: U.S. Geological Survey Techniques and Methods book 3, chap. C4, 53 p.

https://pubs.usgs.gov/tm/tm3c4/pdf/TM3C4.pdf

• Davis, Broderick E., and Federal Interagency Sedimentation Project, 2005, A guide to the proper selection and use of federally approved sediment and water-quality samplers: U.S. Geological Survey Open-File Report 2005-1087. https://pubs.usgs.gov/of/2005/1087/

• Nolan, K. Michael; Gray, John R.; Glysson, G. Douglas, Introduction to suspended-sediment sampling, 2005: U.S. Geological Survey Scientific Investigation Report 2005-5077.

https://doi.org/10.3133/sir20055077 [presentation- available online for download]

• Edwards, Thomas K., Glysson, G. Douglas, Field methods for measurement of fluvial sediment, 1999:

U.S. Geological Survey Techniques of Water-Resources Investigations 03-C2.

https://pubs.er.usgs.gov/publication/twri03C2

• Example data and metadata/MAS: Continuous 15-minute Time-series Suspended-Sediment Concentration Data and Model Summaries at Select Sites in the Sacramento-San Joaquin Delta, California - ScienceBase-Catalog https://www.usgs.gov/mission-areas/water-resources/science/fluvial-sediment-and-geomorphology-resources-monitoring-and https://www.usgs.gov/mission-areas/water-resources/science/fluvial-sediment-and-geomorphology-resources-monitoring-and http://pubs.water.usgs.gov/twri9A https://water.usgs.gov/admin/memo/SW/sw.2016.07%2Bwq.2016.10.pdf https://pubs.usgs.gov/tm/tm3c4/pdf/TM3C4.pdf https://pubs.usgs.gov/of/2005/1087/ https://doi.org/10.3133/sir20055077 https://pubs.er.usgs.gov/publication/twri03C2 https://www.sciencebase.gov/catalog/item/5eeca1bb82ce3bd58d8a27a7 https://www.sciencebase.gov/catalog/item/5eeca1bb82ce3bd58d8a27a7 https://www.sciencebase.gov/catalog/item/5eeca1bb82ce3bd58d8a27a7

SECTION C – CONTRACT CLAUSES

System updates may lag policy updates. The System for Award Management (SAM) may continue to require entities to complete representations based on provisions that are not included in agency solicitations, including 52.223-22, Public Disclosure of Greenhouse Gas Emissions and Reduction Goals—Representation, and paragraph

(t) of 52.212-3, Offeror Representations and Certifications—Commercial Products and Commercial Services.

Agencies will not consider or use these representations. Entities are not required to, nor are they able to, update their entity registration to remove these representations in SAM.

52.252-2 Clauses Incorporated by Reference FEB 1998

This contract incorporates one or more clauses by reference, with the same force and effect as if they were given in full text.